Worksheetsангл 50-100
Total questions: 50
Worksheet time: 25mins
50) Specify the basic salt
CaOHS
CaS
CaSo4
CaHPO4
CaO
51) How many lanthanides is available in D.I. Mendeleyev’stable?
14
104
14
22
85
52) Specify a unit of measure of quantity of substance
mole
kg
g/mole
g
mole/l
53) How many atoms three nitrogen molecules
6
4
2
3
1
54) Calculate the molar weight of hydroxide of ammonium
35
29
30
15
28
55) Specify the formula of nitrate of ammonium
NH4NO3
NH3OH
NH4NO2
NH3
NH4
56) Finish the equation and specify substance – х: Ba(OH)2 + H2SO4x +H2O
BaSO4
BaSO3
BaS
Ba2SO4
Ba(SO4)2
57) Specify amphoterous hydroxides
Al(OH)3; Zn(OH)2
Cu(OH)2; NaOH
NaOH; KOH
Cu(OH)2; Ba(OH)2
Ba(OH)2; Mn(OH)2
58) Calculate the molar weight sodium dihydrogenorthophosphate
120
144
56
75
83
59) Specify the formula for smell gas
CO
CO2
CH4
C2H2
O3
60) Calculate valence of nitrogen in ammonia
3
5
1
2
4
61) Specify cyanide ion
CN-
CN2-
CN0
CN3-
CN5-
62) Define a degree of oxidation of chromium in dichromate of potassium
+6
-6
+4
+2
+1
63) Specify indicate the trivial name of wolfram
lead
gold
iron
tungsten
tin
64) Calculate the molar mass of aluminum hydroxide
49
98
78
9,8
0,98
65) Specify number electrons in atom of hydrogen
10
11
7
5
1
67) How many f elements are there in the periodic table
20
35
32
28
14
66) Specify number electrons in atom of aluminum
10
11
14
27
13
68) What of metals concerns to d - types?
Ca
Na
Fe
Ba
Li
69) Specify of nitrogen monoxide
N2O
O2
H2
F2
Cl2
70) Specify the name of salt - CaOHNO3
Са monohydroxonitrate
nitrate Са
nitride Са
hydronitrate Са
71)How many groups are available in D.I. Mendeleyev's table?
7
10
9
8
6
72) Specify the potassium
P
K
Na
Ca
V
73) How many degree oxidation of oxygen?
+6, +4 +2
+5,-3
+2, -2, -1
-4,-2
-8,-4
74) Calculate the molar weight of permanganate of potassium
210
505
170
158
101
75) Specify the formula of a monohydrocarbonate of potassium
KHCO3
K2CO3
KH2CO3
K2CO4
KCO3
76) Finish the equation of reaction and specify substance – х:Zn(OH)2 + H2S → x + H2O
ZnS
ZnSO4
ZnSO3
Zn2SO4
Zn2S
77) Specify not salt-forming oxides
CO; NO
CO2; SO3
N2O; P2O5
Na2O; SiO
SO3; SO
78)Calculate the molar weight for potassium hydrosulphate
15
75
114
202
136
79) Specify the formula hydrogen peroxide
H2O2
H2O
OH
HO2
H3O2
80) Specify the valence of beryllium
1
5
3
2
6
81) Specify the sulphite ion
SO32-
SO-3
SO-2
SO3-
SO-3
82) Define a degree of oxidation of nitrogen in hydroxide of ammonium
-3
+5
+3
+1
-1
83) Specify р-element
Fe
Ca
Cs
C
Mg
84) Calculate molar mass of sulfuric acid
98
49
37
0,98
9,8
85) How many atoms contain in three ozone molecules
9
1
3
6
86) Define the number of electrons in atom magnesium
12
20
23
22
17
87) Specify the formula of hydrochloric acid
HCl
HF
HBr
H2S
H3N
88)To what electron type concerns the element with an ordinal number Z = 11
s
d
p
f
g
89) Specify the formula of calcium chloride
CaCl2
CH4
AlCl3
AsH3
NH3
90) Specify acidic salt
NaHCO3
Na2CO3
NaCO3
Na2CO3·H2O
Na2CO3·10H2O
91) How many periods are available in D.I.Mendeleyev's table?
7
8
9
10
5
92) Specify a unit of measure of relative atom weight -Ar
without an unit of measure
g/mole
kg
g
mole
93) Calculate the volume of hydrogen quantity of 2 mole
44,8
2,24
0,224
2
0,022
94) Calculate the molar weight of silicate calcium
116
220
101
98
310
95) Specify the formula of dihydroortophosphate of sodium
NaH2PO4
Na3PO4
Na3P
Na3PO3
96) Finish the equation of reaction and specify substance – х: Ca(OH)2 + HNO3→x + H2O
Ca(NO3)2
CaNO3
Ca3N2
CaNO2
Ca2NO3
97) Specify the basic oxides
Na2O; K2O
ZnO; CaO
Al2O3; FeO
P2O5; CO
CuO; Na2O
98) Calculate the molar weight for calcium hydroxide
74
64
30
15
43
99) Specify p-elements
C
Na
Ca
H
Fe
